Release v3.2.3 of Ktistec includes two big features:

• FEP-1b12 Group federation
  Improved federation with Lemmy and other forum-type servers. Ktistec supports community and thread follow/unfollow, as well as up-vote/like (down-vote/dislike is supported but there is no visual affordance for that yet).
• FEP-9098 Custom emojis
  Support for viewing custom emoji in posts and on actor profiles. Ktistec does not yet support custom emoji creation and management.

The full changelog:

Added

• Support for viewing custom emoji in posts and on actor profiles.
• Actor type (Person, Group, etc.) overlay badges on actor panels.
• Colored fallback avatars for actors without icons.
• Support for robots.txt.

Fixed

• Federation with Lemmy and other servers that support FEP-1b12.
  • Shared inbox support for local actors.
  • Serialization of Undo includes the undone activity.
  • Serialization of Like and Dislike does not.
• Notify only once for an object's first received activity.

Changed

• Accumulate metrics by hour for finer granularity.
• Clean up presentation of public followers/following pages.

The next release will include support for Mastodon polls (FEP-9967).

#ktistec #crystallang #activitypub #fediverse

I've improved federation support for Lemmy and other servers that support FEP-1b12 Group Federation.

I had to increase the number of available file descriptors on my personal server 4x because of the resultant inbound volume of ActivityPub activities! I liked a federated post and DOSed my server.

#ktistec #activitypub #fediverse

The big feature in release v3.2.2 of Ktistec is pinned posts with support for the Mastodon Featured Posts collection. Federation works both ways—pin a post on Ktistec and it will show up as a pinned post on Mastodon and vice versa. When you refresh an actor profile, Ktistec also fetches and updates the actor's pinned posts. This is another small step in the direction of supporting all features that Mastodon-compatible client applications expect to access via the API. It's also useful in its own right.

The other major feature, which I posted a short video demonstrating here, is X-Ray Mode. X-Ray Mode is a developer and power-user tool for inspecting ActivityPub JSON-LD representations of actors, objects, and other content. Pressing Ctrl+Shift+X on any page displays the data behind the page—like an x-ray. You can:

• Cached Version: View the local JSON-LD representation stored in the Ktistec database
• Remote Version: Fetch and view the original JSON-LD representation from the source server
• Navigation: Click on any ActivityPub IRI to navigate to that object
• History: Use Alt+Left and Alt+Right to navigate through your viewing history

This feature is useful for debugging federation issues, understanding ActivityPub structures, and verifying how content is stored and represented.

Here's the full changelog for the release:

Added

• Support for pinned posts and the Mastodon "featured posts" collection.
• X-Ray Mode for viewing and navigating JSON-LD resource (actor, object, etc.) representations.
• Back links on thread pages for easier navigation. (fixes #1)
• License page for LibreJS compliance. (fixes #127)
• Highlighting of recently fetched hashtagged posts.

Changed

• Improved presentation of audio and video media.
• Refactored theming/styling implementation.

The next release will focus on smaller features and bug fixes.

Enjoy!

#ktistec #crystallang #activitypub #fediverse

Release v3.2.1 of Ktistec adds support for bookmarking posts. This was so immediately useful I don't know why it took me so long to get around to it!

Pinned/featured posts are in the works for the next release.

The full changelog:

Added

• Support for bookmarking posts.

Fixed

• Invalidate user's sessions after changing password.
• Ignore supplied languages that don't conform to expected format.

Changed

• Upgrade Kemal.

In other thoughts... I'd like to make followed hashtags more consumable. I follow ~10 hashtags and: 1) it's hard to tell what's new, 2) it feels like they arrive in large batches that are difficult to digest, and 3) the reading experience is meh.

#ktistec #fediverse #activitypub #crystallang

I ended up with a solution that exaggerates the focal point offset from center to try to get more of the image around the focal point inside the container:

def normalized_focal_point
  return nil unless has_focal_point?
  x, y = focal_point.not_nil!
  norm_x = x / 2 + 0.5      # normalized x = x / 2 + 0.5
  norm_y = -y / 2 + 0.5     # normalized y = -y / 2 + 0.5 (y inverted)
  # push the focal point toward the edges so that more of the focused image is in view
  {
    exaggerate(norm_x),
    exaggerate(norm_y)
  }
end

private def exaggerate(value, strength = 0.75)
  centered = value - 0.5
  exaggerated = centered.sign * (centered.abs ** strength)
  (exaggerated + 0.5).clamp(0.0, 1.0)
end

Reading up on object-position and its use for focal point support in Mastodon and looking at examples in practice it doesn’t seem like the existing implemented approach works well (link). I'm open to better ways to do this, and I welcome course correction if I'm heading in the wrong direction.

#ktistec #activitypub

There are two big features in release v3.1.3 of Ktistec: auto-approve followers and a new image viewer.

Auto-approve followers is conceptually simple ("the server automatically sends an Accept activity when it receives a Follow activity") but it required extensive changes to some of the oldest code in the codebase: the inboxes and outboxes controllers. I refactored inbox and outbox side-effect processing into independent services, which made it possible to support side-effects like auto-approve follow (and also auto-follow back), without having to go through the controllers.

A more significant change for me personally was replacing the lightGallery image gallery (an external dependency) with my own implementation. It's not as slick, and not as full of features—I wrote it in two days—but it is fully free software, and that's important to me.

Added

• Add admin page for managing OAuth access tokens.
• Add support for auto-approve followers. (fixes #26)
• Add support for auto-follow back.

Fixed

• Prevent triggering actor refresh when user is anonymous.

Changed

• Replace "lightgallery" dependency with custom image viewer.
• Set OAuth access token expiry to 30 days (previously expired after 24 hours).
• Refactor inbox and outbox processing into dedicated processor services.

The OAuth changes set the groundwork for better support of the Mastodon API and the Fediverse clients that depend on it. Stay tuned!

#ktistec #fediverse #activitypub #crystallang